Under-water exhaust-outlet for internal-combustion engines.



Wl'zql'l UNDER WATER EXHAUST OUTLET FOB INTERNAL OOlUS'lmN ENGINES.

APPLIOATIOI FILED .YUIH i?, 1909. 940,291 Patented Nov. 16, 1909.

5%@ ff/MW WILLIAM LAIGHTON TOBEY, 0F WINTHBOP, MASSACHUSETTS.

UNDER-WATER EXHAUST-0UTLET FOB INTERNAL-COMBUSTION ENGINES.

Bpeeication o! Letters Patent.

Patented Nov. 16, 1909.

Application tiled .Tune 24, 1809. Serial No. 504,203.

To all whmn 'il may concern:

Be it known that I, VILLIAM LAioH'roN Toney, of Winthrop, in the countyof Suffolk and State of Massachusetts, have invented certain new anduseful Improvements in Under-Water Exhaust-Outlets forInternalCombustion Engines, of which the following is a specification.

My invention relates to under water outlets for exhaust gases frominternal combustion engines and has for its object to reduce the backpressure due to the head of water n inst which the exhaust gases aredelivereil I accomplish this in the followingmanner.

eferrmg to the drawings Fi 1. shows in section a side view, and Fig. 2.an end view of my invention.

In Fig. 1. the water inlet chamber a. has an inlet opening at b. throughthe forward shell of the exhaust .chamber c. The area of the water inletopening b. is approximately the size of the exhaust pipe leading to theexhaust inlet d'. The water outlet e. is substantially the same area asthe water inlet b. The water inlet chamber a. is contained wit-hin theexhaust chamber c. and the water outlet c. is approximately concentricwith the exhaust outlet f. The area of the exhaust outlet isapproximately the saine as the combine water inlet area and the area ofthe exhaust pipe.

The operation of my device is us follows. The exhaust chamber or nozzleis fastened on the side or run of a boat` below and near the water linewith the inlet ov lning b. facing forward to receive the ow of water duolo the pus-sado of the bout through the water. The rapid flow of waterthrough the l inlet chamber a. and out of the outlet c.

and through the concentric exhaust outlet f. causes the gas in theexhaust chamber c. to be carried alon with this jet of Water, forming aparta vacuum and reducin the back pressure against which the ex oustwould be delivered due to its location below the surface of the water.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is.

1. In an under water exhaust nozzle, the combination of au exhaustchamber, with a contained water inlet chamber having its water outletapproximatel concentric with the exhaust outlet substantially asdescribed.

2. In an under water exhaust nozzle the combination of an exhaustchamber with a contained water inlet nozzle having its water outlet aproximately the same area as the exhaust i et pi Je and concentric withthe exhaust outlet. su antially as described.

3. In an under water exhaust nozzle, the combination of an exhaustchamber with a contained water inlet chamber having water inlet andoutlet orifice of approximately the same aren, and with water outletapproximately concentric with exhaust outlet substantially as described.

4. In nu under water exhaust nozzle an exhaust chamber having an openingin the forward shell. of approximately the same area as the exhaustinlet pipe, said opening to project a jet concentric with andapproximately half the arca of the exhaust outlet.

In testimony whereof I have aflixed my signature, in presence of twowitnesses.

WILLIAM LAIGHTON TOBEY.

Witnesses:

Foam-:sr E. Lovmor, Room: P. Toner.

